Issue in Installation through registry and pkg

[Bala-1998]

When I try to install the Automotive POMDPs package through the registry I get the following error:

julia> POMDPs.add_registry()
ERROR: UndefVarError: add_registry not defined
Stacktrace:
[1] getproperty(x::Module, f::Symbol)
@ Base ./Base.jl:31
[2] top-level scope
@ REPL[5]:1

In case I try to install by using Pkg, I get the following error:
import Pkg; Pkg.add("AutomotivePOMDPs")
Resolving package versions...
ERROR: cannot find name corresponding to UUID 3065fe53-3878-5aed-aae7-ab641be43734 in a registry
Stacktrace:
[1] pkgerror(msg::String)
@ Pkg.Types ~/.julia/juliaup/julia-1.10.0+0.x64.linux.gnu/share/julia/stdlib/v1.10/Pkg/src/Types.jl:70
[2] deps_graph(env::Pkg.Types.EnvCache, registries::Vector{…}, uuid_to_name::Dict{…}, reqs::Dict{…}, fixed::Dict{…}, julia_version::VersionNumber, installed_only::Bool)
@ Pkg.Operations ~/.julia/juliaup/julia-1.10.0+0.x64.linux.gnu/share/julia/stdlib/v1.10/Pkg/src/Operations.jl:578
[3] resolve_versions!(env::Pkg.Types.EnvCache, registries::Vector{…}, pkgs::Vector{…}, julia_version::VersionNumber, installed_only::Bool)
@ Pkg.Operations ~/.julia/juliaup/julia-1.10.0+0.x64.linux.gnu/share/julia/stdlib/v1.10/Pkg/src/Operations.jl:406
[4] targeted_resolve(env::Pkg.Types.EnvCache, registries::Vector{…}, pkgs::Vector{…}, preserve::Pkg.Types.PreserveLevel, julia_version::VersionNumber)
@ Pkg.Operations ~/.julia/juliaup/julia-1.10.0+0.x64.linux.gnu/share/julia/stdlib/v1.10/Pkg/src/Operations.jl:1360
[5] tiered_resolve(env::Pkg.Types.EnvCache, registries::Vector{…}, pkgs::Vector{…}, julia_version::VersionNumber, try_all_installed::Bool)
@ Pkg.Operations ~/.julia/juliaup/julia-1.10.0+0.x64.linux.gnu/share/julia/stdlib/v1.10/Pkg/src/Operations.jl:1332
[6] _resolve(io::Base.TTY, env::Pkg.Types.EnvCache, registries::Vector{…}, pkgs::Vector{…}, preserve::Pkg.Types.PreserveLevel, julia_version::VersionNumber)
@ Pkg.Operations ~/.julia/juliaup/julia-1.10.0+0.x64.linux.gnu/share/julia/stdlib/v1.10/Pkg/src/Operations.jl:1370
[7] add(ctx::Pkg.Types.Context, pkgs::Vector{…}, new_git::Set{…}; preserve::Pkg.Types.PreserveLevel, platform::Base.BinaryPlatforms.Platform)
@ Pkg.Operations ~/.julia/juliaup/julia-1.10.0+0.x64.linux.gnu/share/julia/stdlib/v1.10/Pkg/src/Operations.jl:1387
[8] add
@ Pkg.Operations ~/.julia/juliaup/julia-1.10.0+0.x64.linux.gnu/share/julia/stdlib/v1.10/Pkg/src/Operations.jl:1376 [inlined]
[9] add(ctx::Pkg.Types.Context, pkgs::Vector{…}; preserve::Pkg.Types.PreserveLevel, platform::Base.BinaryPlatforms.Platform, kwargs::@kwargs{…})
@ Pkg.API ~/.julia/juliaup/julia-1.10.0+0.x64.linux.gnu/share/julia/stdlib/v1.10/Pkg/src/API.jl:278
[10] add(pkgs::Vector{Pkg.Types.PackageSpec}; io::Base.TTY, kwargs::@kwargs{})
@ Pkg.API ~/.julia/juliaup/julia-1.10.0+0.x64.linux.gnu/share/julia/stdlib/v1.10/Pkg/src/API.jl:159
[11] add(pkgs::Vector{Pkg.Types.PackageSpec})
@ Pkg.API ~/.julia/juliaup/julia-1.10.0+0.x64.linux.gnu/share/julia/stdlib/v1.10/Pkg/src/API.jl:148
[12] add
@ Pkg.API ~/.julia/juliaup/julia-1.10.0+0.x64.linux.gnu/share/julia/stdlib/v1.10/Pkg/src/API.jl:147 [inlined]
[13] add(pkg::String)
@ Pkg.API ~/.julia/juliaup/julia-1.10.0+0.x64.linux.gnu/share/julia/stdlib/v1.10/Pkg/src/API.jl:146
[14] top-level scope
@ REPL[3]:1
Some type information was truncated. Use show(err) to see complete types.

Could you please tell me a way by which I can resolve the above issues so that I can install the package.